Troy Johnston hit a walk-off two-run home run in the 11th inning -- his second homer of the game - to give the host Miami Marlins a 6-4 come-from-behind win over the Detroit Tigers on Saturday.

The Marlins (70-79) won their fourth straight and assured themselves of winning the three-game weekend series.

The A.L. Central-leading Tigers (84-65) lost their third straight to keep their magic number at eight.

The Tigers took a 4-3 lead in the top of the 11th on Wenceel Perez's RBI double but could not score again despite having the bases loaded with nobody out.

Otto Lopez hit an infield single to lead off the bottom of the 11th for Miami, which moved automatic runner Joey Wiemer to third. Heriberto Hernandez followed with a fielder's choice grounder to tie the score.

Johnston then hit his

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